There are a lot of ocean, but limited shores. I guess that's the only economical place to build it, but of course it blocks scenery. If people truly built it in open ocean, less people will complain.
https://profession.americangeosciences.org/society/intersect...
The biggest is Hywind Tampen, Max. water depth 300 m
NOK 8 billion ($730 million; $8.3m/MW)